1 Reply Latest reply: Jun 28, 2012 9:44 AM by JFFulcrum RSS

one-way speed of single x1 PCIe slot with G41 chipset

Paul A. Mitchell Community Member
Currently Being Moderated

The block diagram here:




500 MB/s each x1


But, is this speed for one direction only, or

for both directions combined?


In other words, if I install an x1 PCIe 2.0 RAID controller e.g.

Newegg.com - HighPoint RocketRAID 620 PCI-Express 2.0 x1 SATA III (6.0Gb/s) Controller Card

is the maximum upstream bandwidth limited to 250 MB/s

even though each SATA channel is rated at 300 MB/s?


It would help if the chipset block diagram indicated

the PCI-Express Generation for the x1 slot.


The block diagram does indicate PCI Express 1.1 for the x16 slot.


If the x1 slot is also PCI Express 1.1, THEN the one-way

bandwidth of that x1 slot is 250 MB/second, correct?


Please confirm or correct the above.


RSVP and ... THANKS!




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